Chemical Kineti...

The energy of activation for a first order reaction is $$104 kJ mol^{-1}$$. The rate constant at  $$25^oC$$ is $$3.7\times 10^{-5} s^{-1}$$. What is the rate constant at $$30^oC$$ ?

Find out the percentage of the reactant molecules crossing over the activation energy barrier at 325K, given that $$\triangle { H }_{ 325 }=0.12kcal,\quad { E }_{ a(b) }=+0.02kcal$$.

Figure depicts the charge in conc. of species $$x$$ & $$y$$ for reaction $$2x \rightarrow y$$, as a function of time the point of inter section of two curves represents?

 In a first-order reaction the concentration of the reactant is decreased from $$1.0{\text{ M to 0}}{\text{.25 M }}$$  in 20 min.The rate constant of the reaction would be:

For a reversible reaction : $${ N }_{ 2 }+{ O }_{ 2 }\rightleftharpoons \quad 2NO$$
Activation energy of the backward reaction is lower than that of forward reaction. The slope of k verse 1/T graph will be:

A first order reaction is half-completed in $$45$$ minutes. How long does it need for $$99.9\%$$ of the reaction to be completed?

For a first order reaction, 

The reaction : $$X \rightarrow$$ product, follows first-order kinetics in $$20$$ minutes, the concentration of $$X$$ changes from $$0.1 M$$ to $$0.05\ M$$ then rate of reaction when concentration of $$X$$ is $$0.02\ mol/ L$$ is:

For zero order reactions, the linear plot was obtained for $$[A]$$ vs t. The slope of the line is equal to:

An endothermic reaction $$A\rightarrow B$$ has an activation energy $$15kcal/mole$$ and the heat of reaction is $$5kcal/mole$$. The activation energy of reaction $$B\rightarrow A$$ is: